Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / WebControls / DataKey.cs / 1 / DataKey.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI.WebControls { using System; using System.Collections; using System.Collections.Specialized; using System.Security.Permissions; ////// [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] public class DataKey : IStateManager { private IOrderedDictionary _keyTable; private bool _isTracking; private string[] _keyNames; public DataKey(IOrderedDictionary keyTable) { _keyTable = keyTable; } public DataKey(IOrderedDictionary keyTable, string[] keyNames) : this(keyTable) { _keyNames = keyNames; } ////// Inheritable overridable implementation of IsTrackingViewState /// protected virtual bool IsTrackingViewState { get { return _isTracking; } } public virtual object this[int index] { get { return _keyTable[index]; } } public virtual object this[string name] { get { return _keyTable[name]; } } public virtual object Value { get { if (_keyTable.Count > 0) { return _keyTable[0]; } return null; } } public virtual IOrderedDictionary Values { get { if (_keyTable is OrderedDictionary) { return ((OrderedDictionary)_keyTable).AsReadOnly(); } // don't return the actual table because we don't want the user to mess with it. if (_keyTable is ICloneable) { return (IOrderedDictionary)((ICloneable)_keyTable).Clone(); } OrderedDictionary table = new OrderedDictionary(); foreach (DictionaryEntry entry in _keyTable) { table.Add(entry.Key, entry.Value); } return table.AsReadOnly(); } } ////// Inheritable overridable implementation of LoadViewState /// protected virtual void LoadViewState(object state) { if (state != null) { if (_keyNames != null) { object [] myState = (object [])state; // if we have key names, then we only stored values. if (myState[0] != null) { for (int i = 0; i < myState.Length && i < _keyNames.Length; i++) { _keyTable.Add(_keyNames[i], myState[i]); } } } else { if (state != null) { ArrayList stateArrayList = state as ArrayList; if (stateArrayList == null) { throw new HttpException(SR.GetString(SR.ViewState_InvalidViewState)); } OrderedDictionaryStateHelper.LoadViewState(_keyTable, stateArrayList); } } } } ////// Inheritable overridable implementation of SaveViewState /// protected virtual object SaveViewState() { int count = _keyTable.Count; if (count > 0) { object myState; if (_keyNames != null) { // if we have key names, then we only have to store values. myState = new object[count]; for (int i = 0; i < count; i++) { ((object[])myState)[i] = _keyTable[i]; } } else { myState = OrderedDictionaryStateHelper.SaveViewState(_keyTable); } return myState; } return null; } ////// Inheritable overridable implementation of TrackViewState /// protected virtual void TrackViewState() { _isTracking = true; } #region IStateManager implementation ///bool IStateManager.IsTrackingViewState { get { return IsTrackingViewState; } } /// void IStateManager.LoadViewState(object state) { LoadViewState(state); } /// object IStateManager.SaveViewState() { return SaveViewState(); } /// void IStateManager.TrackViewState() { TrackViewState(); } #endregion } }
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- PenThreadPool.cs
- EntitySetBaseCollection.cs
- FunctionQuery.cs
- Hyperlink.cs
- Int32AnimationBase.cs
- AttributeCollection.cs
- TailCallAnalyzer.cs
- DetailsViewCommandEventArgs.cs
- RuntimeTrackingProfile.cs
- ParagraphVisual.cs
- SecurityContextSecurityTokenAuthenticator.cs
- AnnotationDocumentPaginator.cs
- StringConcat.cs
- CodeDomSerializationProvider.cs
- WebScriptMetadataInstanceContextProvider.cs
- MasterPageBuildProvider.cs
- PageWrapper.cs
- WindowsListViewGroup.cs
- DropDownButton.cs
- MsmqIntegrationAppDomainProtocolHandler.cs
- AnimatedTypeHelpers.cs
- BoolExpression.cs
- InstanceDataCollection.cs
- PlatformNotSupportedException.cs
- DecoderReplacementFallback.cs
- CultureMapper.cs
- X509Certificate.cs
- SetStoryboardSpeedRatio.cs
- HijriCalendar.cs
- XmlCharCheckingWriter.cs
- SettingsPropertyIsReadOnlyException.cs
- DateRangeEvent.cs
- XmlSchemaComplexContentExtension.cs
- FlowDecisionDesigner.xaml.cs
- BasicHttpSecurityElement.cs
- Membership.cs
- SqlRowUpdatingEvent.cs
- CheckBoxBaseAdapter.cs
- ResourceDictionaryCollection.cs
- UnknownWrapper.cs
- StrokeIntersection.cs
- BrowserDefinition.cs
- LeftCellWrapper.cs
- GcHandle.cs
- TableHeaderCell.cs
- CodeSnippetCompileUnit.cs
- URLAttribute.cs
- SourceChangedEventArgs.cs
- TokenBasedSetEnumerator.cs
- ProviderCollection.cs
- OpCellTreeNode.cs
- Constants.cs
- MaskedTextProvider.cs
- DataGridViewAutoSizeModeEventArgs.cs
- ObjectDataProvider.cs
- SafeBitVector32.cs
- DBSqlParserTableCollection.cs
- LabelAutomationPeer.cs
- ErrorWebPart.cs
- DateTimeAutomationPeer.cs
- DeferrableContent.cs
- EventProviderClassic.cs
- EntityDesignPluralizationHandler.cs
- CompilerScope.Storage.cs
- CloudCollection.cs
- FileDialog_Vista.cs
- UnsafeNativeMethodsMilCoreApi.cs
- ToolboxItemCollection.cs
- dsa.cs
- XmlAttributeCache.cs
- LocationReferenceValue.cs
- Point4DConverter.cs
- DistinctQueryOperator.cs
- AsyncOperationLifetimeManager.cs
- RSAPKCS1SignatureFormatter.cs
- CounterCreationDataCollection.cs
- SQLUtility.cs
- NamespaceDecl.cs
- RolePrincipal.cs
- RelatedEnd.cs
- ToolStripItemEventArgs.cs
- TypeSystem.cs
- GenericEnumerator.cs
- PointAnimationUsingKeyFrames.cs
- codemethodreferenceexpression.cs
- PropertyBuilder.cs
- SecurityTokenSpecification.cs
- HandlerFactoryWrapper.cs
- CommandHelpers.cs
- Rijndael.cs
- HtmlHead.cs
- SqlCharStream.cs
- CanonicalFontFamilyReference.cs
- VirtualPathExtension.cs
- DelegateSerializationHolder.cs
- DataGridViewImageColumn.cs
- ETagAttribute.cs
- Inflater.cs
- BinaryObjectInfo.cs
- NamedPipeTransportSecurity.cs